"Great. I am glad to hear that ArduPilot is turning back towards the DIY market.
I hadn't heard of differential I2C before so I looked it up. Very impressive. It looks like the way they set up the terminations that it doesn't draw a great…"

Jordi Muñoz's Photos

Jordi Muñoz's Blog

Let me introduce myself, some of you might remember me as the cofounder of 3D Robotics/3DR. Since then, a particular and well-selected team of people from 3DR San Diego and 3DR TJ and I are pleased to announce we are continuing to develop legacy & new products for…

Last week we implemented a fancy ticketing system that will enable us to properly track issues among customers and be able to supervise the time response of our representatives but at the same time give them access to a set of tools that will help them be a lot more efficient.

Unfortunately the systems blow up last Friday (the 20th) so we were receiving emails from customers but any of our responses made it out, they were probably sent to the limbo.net.

I’m pleased to announce the new APM 2.0 revision, better known as APM2.5!

But before you start screaming that you just got an APM 2.0, let me explain that there’s NO difference in performance at all between the two, the board is still the same in terms of functionally and it runs exactly the same code as…

Comment Wall (52 comments)

Congratulations for your anniversary. I will try the explanations ASAP when I will be back home. Which is the best ADC, after you, to use with IMU 5DOF I bought? Jason Wood used an MCP 3208 but:
a) his associated kalman is only for the angle and the gyro_bias, not enough for such a sensor;
b) he uses an ADC not so strong for IMU 5DOF (only 12 bit)
c) he uses some library functions at which I can't have access.
d) dreaming to use something like ahrs.c we discover the memory limitation
Saturday morning I will go a week for a short trip in Madrid. Maybe the very beautiful and very catholic Espagne will help to find a solution.

But he is using it for an helicopter?? Yes i saw some projects using the same sparkfun board but they used it in airplanes (and 12 bits ADC), no helicopters, and the system work at 3 volts so the voltage reference is excellent for this IMU, arduino uses 5 volts and the ADC reference is between 0v to 5v, no 0v to 3volts (remeber that the 5DOF uses 3 volts)... Well i obtained a good ADC with 16 bit resolution... an works with I2C... butt i don't know, could work if you only have one or two sensors... but five is too much, i2c is a easy to use port, but is slowly...

Ah maybe the problem with your library's that you cant just copy and paste the code, you need to adapt it to arduino enviroment
Well you can try... but i will give you an advise try to void using arduino for helicopters (maybe for airplane is feasible) but for helicopter you need high refresh rate to maintain it stabilized..

I can give you the link to download the Keil Uvision for program ARM in C++, and where to buy the JTAG (ULINK2) to program it... This MCU works with 3 volts, ultra low power, you have 3 UART ports (serials), 12 bits ADCs, two I2c, and is 2 dmips of power, that means more or less than 200 arduinos attached together of processing power, and consume the same energy as only one. IS based in the ARM Cortex M3, you know ARM right??? is the microprocessor of all the cellular phones (even iphone), and PS3, etc. etc.

I using it to program my next airplane autopilot and i don't have to worry about power any more and ports.. But you need to read a little bit... and expend some time to get the ARM... but at the END is very easy.. even easier than arduino..

Hy Jordi, I am back from Madrid. It was wonderful (Zurbaran, Goya, El Greco, Picasso, etc). What about JTAG (ULINK2) source you promised me? I tried to look on the net but the price of this equipment is big. I found a quotation around 350 dollars. Please send me your opinion. Mean time the sparkfun send me the Cortex M3.
A bientôt, Georges

Work as the ulink2 but is called ulinkme (check it in keil webpage). I used it and is very good.. (was include with my development boards). I also recommend you buy the keil ST32 develiment board because includes the ulinkme free... =)

Hy Jordi, I found very easy the first reference but for the second I am not able to choose one. There are many options and as I am not sure I prefer to ask again your help. Please send me the pointer for the product as for the first one. A bientôt, Georges

I saw that photo of you and another guy holding an white aircraft, could you please tell me where did you got one of those and how much did it cost?
I'm from Brazil and I never saw those models around here, maybe I will have to buy one outside to use in my grad paper.